/Engine/Plugins/Runtime/GeometryProcessing/Source/DynamicMesh/Public/Solvers/PrecomputedMeshWeightData.h
The "floor" for triangle area. NB: the cotan laplacian has terms ~ 1/TriArea and the deformation matrix has terms ~ 1/TriArea**2
static constexpr double SmallTriangleArea = (1.e-8f);